Changes in 2.9.3:
- fix for Alt+some key being treated as ESCAPE and clearing drills (reported by Chris Jones)
- updates to the ktouch lesson import script, based on a patch submitted by Alexei Matveev)
- updates to lessons imported from ktouch (fixes issue with lines over 80 characters causing errors, amongst other things)
- fix some errors in lessons, thanks to Rob Day and Chris Jones